pycharm.nix

with import <nixpkgs> {}; {
  pycharm = stdenv.mkDerivation rec {
	name = "pycharm-community-mau"; 
	version = "2016.2.2";
	src = fetchurl { 
	  url = https://download.jetbrains.com/python/pycharm-community-2016.2.2.tar.gz;
	  sha256 = "6bf50910355f680983246ab51f7a082ae6f34f799db222986c1c59003bf1dbec";
	};
	buildInputs = [ jdk makeWrapper ];
        installPhase = ''
          echo $out
          mkdir -p $out
          cp -R . $out
          jdk=${jdk.home}
          makeWrapper "$out/$name/bin/pycharm.sh" "$out/bin/pycharm" \
            --prefix PATH : "$out/libexec/${name}:${stdenv.lib.makeBinPath [ jdk ]}" \
            --set JDK_HOME "$jdk" \
            --set ANDROID_JAVA_HOME "$jdk" \
            --set JAVA_HOME "$jdk"
        '';
  };
}

https://gist.github.com/garbas/1938b65c72e5af56ea9045ae14877d73